Systems and methods for fluid pump outlet pressure regulation
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United States of America Patent
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Feb 28, 2017
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app pub date -
Mar 14, 2013
filing date -
Mar 14, 2013
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Abstract
Fluid pump pressure regulation systems and methods have a valve body with a bore and a valve spool. The valve spool connects a first and second port to a third port in different valve spool positions. The first port is in fluid communication with an output of a fluid pump to receive a first fluid pressure from the fluid pump. The second port is in fluid communication with a fluid reservoir. The third port is in fluid communication with a fluid pump input to provide a second fluid pressure to the fluid pump to control the first fluid pressure from the fluid pump. A linear actuator is adjacent the valve body, with a first spring and a second spring biasing the valve spool in a first or second direction.
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